Mishimoto Baffled Oil Catch Can Kit / Air-Oil Separator (AOS) for BMW S55 F80 M3, F82/F83 M4, F87 M2 Competition 2015-2020 | Direct-Fit PCV/CCV Crankcase Blow-By Catch Tank | Billet Aluminium | MMBCC-F80-15CBE

Air-Oil Separator Upgrade for BMW S55 - F8X Chassis and F87 M2 Competition

Stop oil vapour robbing your power. This premium bolt-on crankcase catch tank is engineered for the S55 twin-turbo straight-six, giving your intake system a cleaner, drier airflow and helping to keep valves, VANOS and intercooler plumbing free from oily residue. Part number MMBCC-F80-15CBE.

Why enthusiasts choose this kit

Direct-injection turbo engines are known for blow-by and mist returning through the CCV route. This compact two-port canister uses a baffled core with a 50 micron bronze element to strip out contamination before it re-enters the intake tract. Expect reduced valve deposit build-up, more consistent octane, and dependable performance on spirited road drives and track days.

Real-world results

We run this setup on our own S55 cars and customer builds. It installs neatly, is easy to service, and it captures the muck you do not want in your intake. Owners regularly report cleaner charge pipes and greater peace of mind. Backed by a lifetime warranty from the manufacturer.

Highlights

• Vehicle specific bracketry for a tidy, serviceable placement on the S55 platform
• Billet 6061 aluminium canister with Viton seals for durability
• CNC machined lid and large-bore ports to match the factory CCV hose size
• Internal air diverter increases turbulence for superior separation efficiency
• Pre-moulded hoses and all fittings included for a clean OEM-like install
• Installs quickly with hand tools - no trimming of the engine cover
• Fully cleanable design with 88 ml capacity for longer service intervals
• Helps maintain stable knock resistance by reducing oil haze in the intake stream
• Manufacturer Lifetime Warranty

What you get in the box

• Compact baffled canister assembly
• Application-specific mounting bracket
• Pre-formed hoses for S55 routing
• Two 3/4 inch aluminium barbed fittings
• Four worm-drive clamps
• All required mounting hardware
• Warranty documentation

Technical details

• Material: 6061 aluminium with Viton O-rings
• Filtration: 50 micron bronze element with internal baffle and air diverter
• Capacity: 88 ml
• Overall height: 96.52 mm
• Overall diameter: 63.5 mm
• Inlet and outlet: 3/4 inch
• Drain plug thread: 3/8 inch NPT
• Clamp torque: 22 in-lbs recommended, 18 to 27 in-lbs operating range. Do not exceed 27 in-lbs

Model compatibility

Designed for BMW S55-powered models:

• M3 F80 - 2015 to 2018
• M4 F82 Coupe and F83 Convertible - 2015 to 2020
• M4 GTS F82 - 2016
• M4 CS F82 - 2019 to 2020
• M2 Competition F87 - 2019 to 2020

Installation and maintenance

Straightforward bolt-on fit. After installation, check the canister every 1,000 miles to set your service interval, as collection rate varies with climate and driving style. Do not allow fluid above the internal baffle.

Professional fitting

Prefer expert installation in the Midlands. Book with MJ Modifications in Warwickshire. Request a quote at info@mjmodifications.co.uk.

Compatibility check before dispatch

Add your UK registration or the last 7 digits of your VIN at checkout and we will verify suitability for your specific vehicle.

Part number

MMBCC-F80-15CBE

Warranty

Covered by the manufacturer’s Lifetime Warranty for total confidence.

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